Skoda Octavia ii alarm silenced problem

Hello you all here!

im new in the forum and it has came to me just having problems with my Octavia and trying to find answers and solutions on the net.

i have a recently bought second band Škoda Octavia ii Combi 4x4 1.9tdi

it has a manufacturer alarm system

sometimes the alarm system disables the sound 

I presume it must be a combination of pressing open-closes buttons at te remote key or doing it also combos open or closing doors ..but I don’t know how

now is silenced

the red blinking led on the drivers side blinks different from when it has the sound activated .. I know the alarm is on because I can see it comes off with all warning lights blinking when opening with the key or moving inside when the car is locked.. but red led blinks different from how it was when the sound was activated on the alarm ..

any clues?

does anyone knows if there is any combination of pressing lock unlock remote buttons or something to do to reactivate the sound on the alarm? 

Any ideas?

thanks in advance for your help.